Grinding attachment



FIG. 1 is a front elevational view of a first embodiment of a grinding attachment showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof;

FIG. 7 is a front elevational view of a second embodiment of a grinding attachment showing my new design;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a top plan view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a left elevational view thereof; and,

FIG. 12 is a right elevational view thereof. 

CLAIM The ornamental design for a grinding attachment, as shown and described. 